@misc{indiciae1854e3a67599,
  title = {Trace Elements Investigations Report No. 136},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1950},
  doi = {10.3133/tei136},
  url = {https://pubs.usgs.gov/publication/tei136},
  note = {Source identifier: tei136}
}